Step 1: Create a Firehose delivery stream - Amazon CloudWatch Logs
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Step 1: Create a Firehose delivery stream


Before you complete the following steps, you must use an access policy, so Firehose can access your Amazon S3 bucket. For more information, see Controlling Access in the Amazon Data Firehose Developer Guide.

All of the steps in this section (Step 1) must be done in the log data recipient account.

US East (N. Virginia) is used in the following sample commands. Replace this Region with the correct Region for your deployment.

To create a Firehose delivery stream to be used as the destination
  1. Create an Amazon S3 bucket:

    aws s3api create-bucket --bucket firehose-test-bucket1 --create-bucket-configuration LocationConstraint=us-east-1
  2. Create the IAM role that grants Firehose permission to put data into the bucket.

    1. First, use a text editor to create a trust policy in a file ~/TrustPolicyForFirehose.json.

      { "Statement": { "Effect": "Allow", "Principal": { "Service": "" }, "Action": "sts:AssumeRole", "Condition": { "StringEquals": { "sts:ExternalId":"222222222222" } } } }
    2. Create the IAM role, specifying the trust policy file that you just made.

      aws iam create-role \ --role-name FirehosetoS3Role \ --assume-role-policy-document file://~/TrustPolicyForFirehose.json
    3. The output of this command will look similar to the following. Make a note of the role name and the role ARN.

      { "Role": { "Path": "/", "RoleName": "FirehosetoS3Role", "RoleId": "AROAR3BXASEKW7K635M53", "Arn": "arn:aws:iam::222222222222:role/FirehosetoS3Role", "CreateDate": "2021-02-02T07:53:10+00:00", "AssumeRolePolicyDocument": { "Statement": { "Effect": "Allow", "Principal": { "Service": "" }, "Action": "sts:AssumeRole", "Condition": { "StringEquals": { "sts:ExternalId": "222222222222" } } } } } }
  3. Create a permissions policy to define the actions that Firehose can perform in your account.

    1. First, use a text editor to create the following permissions policy in a file named ~/PermissionsForFirehose.json. Depending on your use case, you might need to add more permissions to this file.

      { "Statement": [{ "Effect": "Allow", "Action": [ "s3:PutObject", "s3:PutObjectAcl", "s3:ListBucket" ], "Resource": [ "arn:aws:s3:::firehose-test-bucket1", "arn:aws:s3:::firehose-test-bucket1/*" ] }] }
    2. Enter the following command to associate the permissions policy that you just created with the IAM role.

      aws iam put-role-policy --role-name FirehosetoS3Role --policy-name Permissions-Policy-For-Firehose-To-S3 --policy-document file://~/PermissionsForFirehose.json
  4. Enter the following command to create the Firehose delivery stream. Replace my-role-arn and my-bucket-arn with the correct values for your deployment.

    aws firehose create-delivery-stream \ --delivery-stream-name 'my-delivery-stream' \ --s3-destination-configuration \ '{"RoleARN": "arn:aws:iam::222222222222:role/FirehosetoS3Role", "BucketARN": "arn:aws:s3:::firehose-test-bucket1"}'

    The output should look similar to the following:

    { "DeliveryStreamARN": "arn:aws:firehose:us-east-1:222222222222:deliverystream/my-delivery-stream" }